Allow auto merge for dash

[netomi]

as requested by @gdams

[github-actions]

Diff for d27c478:

Printing local diff for configuration at '/home/runner/work/.eclipsefdn/.eclipsefdn/otterdog-configs/otterdog.json'

Actions are indicated with the following symbols:
+   create
!   modify
!   forced update
-   delete

Organization adoptium[id=adoptium]
  there have been 4 validation infos, enable verbose output with '-v' to to display them.

  
!   repository[name="dash.adoptium.net"] {
!     allow_auto_merge                                         = false -> true
!   }
  
  Plan: 0 to add, 1 to change, 0 to delete.

Showing diff to a canonical version of the configuration at '/home/runner/work/.eclipsefdn/.eclipsefdn/otterdog-configs/otterdog.json'

Organization adoptium[id=adoptium]